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Quaternion rotation!

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duck
2025-05-15 00:08:01 +05:00
parent 12285321d2
commit 796d2bfb35
4 changed files with 165 additions and 45 deletions
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82
src/graphics.zig
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@@ -19,23 +19,52 @@ depth_texture: *sdl.GPUTexture,
msaa_resolve: *sdl.GPUTexture,
pipeline: *sdl.GPUGraphicsPipeline,
to_resize: ?struct { u32, u32 } = null,
window_size: [2]u32,
camera: Camera,
mesh_transform: Transform,
to_resize: ?[2]u32 = null,
const MESH_BYTES = MESH.len * 4;
const MESH_VERTS = @divExact(MESH.len, 3);
const MESH = [_]f32{
-1, 0, 4,
0, 1, 4,
1, -1, 6,
1, 0, 4,
0, -1, 4,
-1, 1, 6,
-1, 1, 6,
1, 1, 6,
-1, -1, 6,
1, -1, 6,
-1, -1, 6,
1, 1, 6,
-1, 1, -1,
1, 1, -1,
-1, -1, -1,
1, -1, -1,
-1, -1, -1,
1, 1, -1,
1, 1, -1,
1, 1, 1,
1, -1, -1,
1, -1, 1,
1, -1, -1,
1, 1, 1,
1, 1, 1,
-1, 1, 1,
1, -1, 1,
-1, -1, 1,
1, -1, 1,
-1, 1, 1,
-1, 1, 1,
-1, 1, -1,
-1, -1, 1,
-1, -1, -1,
-1, -1, 1,
-1, 1, -1,
-1, 1, 1,
1, 1, 1,
-1, 1, -1,
1, 1, -1,
-1, 1, -1,
1, 1, 1,
-1, -1, -1,
1, -1, -1,
-1, -1, 1,
1, -1, 1,
-1, -1, 1,
1, -1, -1,
};
const Self = @This();
@@ -189,6 +218,16 @@ pub fn create() GameError!Self {
.depth_texture = depth_texture,
.msaa_resolve = msaa_resolve,
.pipeline = pipeline,
.window_size = .{ 1600, 900 },
.camera = Camera{
.transform = Transform{
.position = .{ 0.0, 0.0, -6.0 },
},
.near = 1.0,
.far = 1024.0,
.lens = .{ 0.5 * 16.0 / 9.0, 0.5 },
},
.mesh_transform = Transform{},
};
}
@@ -216,6 +255,8 @@ pub fn beginDraw(self: *Self) GameError!void {
self.command_buffer = sdl.AcquireGPUCommandBuffer(self.device) orelse return GameError.SdlError;
if (self.to_resize) |new_size| {
try self.resetTextures(new_size[0], new_size[1]);
self.camera.lens[0] = self.camera.lens[1] * @as(f32, @floatFromInt(new_size[0])) / @as(f32, @floatFromInt(new_size[1]));
self.window_size = new_size;
self.to_resize = null;
}
}
@@ -229,7 +270,7 @@ pub fn drawDebug(self: *Self) GameError!void {
if (render_target == null) return;
const render_pass = sdl.BeginGPURenderPass(self.command_buffer, &.{
.clear_color = .{ .r = 0.0, .g = 0.0, .b = 1.0, .a = 1.0 },
.clear_color = .{ .r = 0.0, .g = 0.0, .b = 0.0, .a = 1.0 },
.cycle = false,
.load_op = sdl.GPU_LOADOP_CLEAR,
.store_op = sdl.GPU_STOREOP_RESOLVE,
@@ -248,17 +289,8 @@ pub fn drawDebug(self: *Self) GameError!void {
sdl.BindGPUGraphicsPipeline(render_pass, self.pipeline);
sdl.BindGPUVertexBuffers(render_pass, 0, &.{ .offset = 0, .buffer = self.vertex_buffer }, 1);
const transform = Transform{};
const camera = Camera{
.transform = Transform{
.position = .{ 0.0, 0.0, -1.0 },
},
.near = 1.0,
.far = 1024.0,
.lens = .{ 0.25 * 16.0 / 9.0, 0.25 },
};
sdl.PushGPUVertexUniformData(self.command_buffer, 0, &camera.matrix(), 16 * 4);
sdl.PushGPUVertexUniformData(self.command_buffer, 1, &transform.matrix(), 16 * 4);
sdl.PushGPUVertexUniformData(self.command_buffer, 0, &self.camera.matrix(), 16 * 4);
sdl.PushGPUVertexUniformData(self.command_buffer, 1, &self.mesh_transform.matrix(), 16 * 4);
sdl.DrawGPUPrimitives(render_pass, MESH_VERTS, 1, 0, 0);
sdl.EndGPURenderPass(render_pass);